1. Dynamic compensation of path length difference in optical coherence tomography by an automatic temperature control system of optical fiber

    Dynamic compensation of path length difference in optical coherence tomography by an automatic temperature control system of optical fiber

    Optical fiber is widely used in optical coherence tomography (OCT) to propagate light precisely with low attenuation and low dispersion. However, the total optical path length within the optical fiber varies in accordance with changes of the temperature. This leads changes in the total optical travel path of the interfering signals and results in shifting of OCT image position to an unintended depth pixel value. In this paper, we presented the temperature-based automatic path length compensating method in OCT to limit the external temperature effect and control the image position in micro-scale without manual movement of optical components. By utilizing ...

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